Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
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AfterFast, Reliable HVAC Cleaning Across League City
HVAC cleaning in League City runs between $425 and $840 for a full system, including the air handler, evaporator coil, blower, and all duct runs. The final number depends on system size, the age of the ductwork, and what our camera inspection finds before we quote anything. We serve every part of League City, from the older Clear Lake corridor ranches to the newer west-side subdivisions, with the same documented process on every job. Call (806) 606-6902 for a written price before any work starts.
What makes League City different from almost every market we work is the moisture. Homes here sit near sea level with Galveston Bay on one side and Clear Lake on the other. That means attic humidity levels stay high enough that mold can colonize inside flex ductwork within days of a condensation event, not weeks. The attic-routed systems dominant in League City’s tract homes absorb that humidity through every seam and joint. When an AC system short-cycles or loses refrigerant charge in August, the duct interiors stay wet long enough for mold to establish. That’s the problem we solve with HVAC Cleaning done as a documented process, not a quick vacuum pass.
Why CleanRun Air Duct Cleaning Is League City’s Preferred HVAC Cleaning Company
Tomas Reyes founded CleanRun in 2013 with one rule that hasn’t changed: write the price down before anyone touches a panel. That’s Haven Standard Clause 1, and it applies the same way to a 1,200-square-foot ranch in Clear Creek Village as it does to a 3,400-square-foot two-story in South Shore Harbour. Homeowners in League City who get a CleanRun quote see the exact scope, the exact price, and the exact equipment we’ll use before they agree to anything.
The reviews from League City customers tell the same story. People don’t write about how friendly our technicians were. They write about seeing the inside of their ducts on a screen and realizing the $79 special from another company had never actually touched the return side. That’s the difference between documented work and vacuum noise. Our technicians are background-checked, uniformed, and identified by name before arrival, per Haven Standard Clause 3. Scheduling is coordinated from our Houston office, but the crews serving League City live and work here, and they arrive with the full equipment roster: Rotobrush, Nikro, Abatement Technologies, Honeywell, and Guardsman. You can look up any of those before we arrive.
Our HVAC Cleaning Services in League City
Evaporator Coil Cleaning
The evaporator coil in a League City home works harder than almost anywhere in Texas because it’s fighting 90% humidity for eight or nine months a year. Dust, pet dander, and biological growth pack into the coil fins, reducing heat transfer and forcing the system to run longer. Our coil cleaning uses professional-grade equipment and a documented photo record showing the before and after. A typical evaporator coil cleaning in League City runs $145 to $285 as a standalone service, and it’s included in a full system clean.
Blower Cleaning
The blower wheel pulls air across the coil and pushes it through the ductwork. In League City’s older homes, we regularly find blower wheels caked with a gray paste of dust and microbial growth that reduces airflow by 20 to 30 percent. That means the system runs longer to hit the thermostat, and the homeowner pays for it on every utility bill. Blower cleaning runs $95 to $185 and takes about an hour. When we’re done, we show you the photo of the blower wheel before and after. You’ll see the difference.
Condenser Cleaning
The outside unit takes a beating in League City. Salt air from Galveston Bay accelerates corrosion on coil fins, and the unit sits in 100-degree heat for months. A fouled condenser coil raises head pressure and shortens compressor life. Condenser cleaning runs $110 to $195 in League City, including coil treatment to remove salt film and restore heat rejection. We recommend it every two years for homes within three miles of the bay.
Air Handler Cleaning
The air handler houses the blower and evaporator coil. In League City homes that took water during Hurricane Harvey, the air handler is often where mold colonies survived original remediation. We documented this in Clear Lake, Kemah-area, and South Shore Harbour homes as late as 2023. Air handler cleaning in League City runs $185 to $310 depending on access and whether the system requires antimicrobial treatment. This is not a service to skip if you’ve ever had water intrusion near the unit.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
BeforeAfterTrusted Brands We Service in League City
We work on all major HVAC brands and stock parts for Carrier, Trane, Lennox, Rheem, Goodman, and American Standard. For duct cleaning equipment, we run Rotobrush and Nikro systems with HEPA filtration. For air quality components, we install and maintain Honeywell and Aprilaire filtration products. League City homeowners don’t wait weeks for parts because our Houston office carries a deep inventory. If your system needs a replacement component, it’s usually in the truck or available same day.
Common HVAC Cleaning Problems We See in League City Homes
- Post-Harvey mold resurfacing years later. Homes that flooded in 2017 and were remediated without duct replacement often still have mold colonies in air handlers and attic flex runs. The coastal humidity keeps spores viable indefinitely. We find active growth in homes that were professionally dried and certified clean.
- Deteriorating fiberglass-lined trunks in 1970s-80s ranches. The original sheet metal trunks installed during the NASA workforce boom have fiberglass liners that degrade into airborne debris. Cleaning these requires inspection first; agitation can break loose brittle liner particles and make the problem worse.
- Sagging flex runs in unconditioned attics. League City attics hit 130-145°F in summer. Flex duct liners degrade, joints separate, and the ducts sag with condensation. We photograph every run so you can see where the system is failing.
- Return-side contamination re-infecting the system. We see supply ducts that were cleaned while the return side was skipped. Within weeks, mold from the return side recontaminates everything. Our process treats the entire system, not just the visible supply registers.
Pricing for HVAC Cleaning in League City, TX
We Also Serve Cities Near League City
CleanRun serves homeowners throughout the Houston metro and Gulf Coast region. If you’re in Pearland, Pasadena, Baytown, or Houston, we schedule from the same Houston office and follow the same written-price, documented-photo process on every job. Whether you’re in HVAC Cleaning in League City territory or a neighboring community, the standard doesn’t change.
Serving League City, TX - Our Local Coverage Area
We’re based in the League City area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - HVAC Cleaning in League City
How do we know if our League City ducts have post-Harvey mold that survived the original remediation?
We run a camera through the air handler and every accessible duct run. Mold shows up as dark, irregular staining on surfaces that should be dry, and it often concentrates at duct joints and air handler seams. Our camera inspection is part of every written estimate, and we photograph everything. If the original remediation skipped the ducts or air handler, mold typically resurfaces within three to five years because the coastal humidity keeps spores viable. Call (806) 606-6902 to schedule an inspection with a written report.
Can our 1980s Clear Lake ranch’s original fiberglass-lined trunk be cleaned, or does it need replacement?
It depends on the liner’s condition. If the fiberglass liner is intact, we clean it. If it’s brittle, flaking, or already shedding into the supply registers, cleaning will only make the debris circulation worse. In that case, we document the deterioration with photos and recommend trunk replacement. We’ll show you the camera footage so you can see exactly why replacement is the honest recommendation.
Why do our ducts in Tuscan Lakes get moldy even though we never had a flood?
Tuscan Lakes homes have ductwork routed through unconditioned attics that hit 130-145°F in summer. When warm, humid attic air meets cold duct surfaces, condensation forms inside the runs. If the AC short-cycles or loses refrigerant charge, the moisture never dries. Mold establishes within days. This is a condensation problem, not a flooding problem, and it happens in newer west-side subdivisions just as much as in older coastal homes. A coil treatment and proper system balancing help.
How do we document duct damage after a storm so insurance accepts a replacement instead of just a cleaning?
We photograph every run, the air handler, and all water staining before any cleaning begins. The photo record includes date-stamped images of interior duct surfaces, damaged liner material, and any standing water or moisture present. We write the scope in plain language that insurance adjusters recognize: moisture intrusion, liner degradation, mold colonization. If ducts need replacement, our documentation supports the claim. No homeowner should accept a cleaning-only settlement when the damage warrants replacement.
Do we need to clean the air handler separately from the ducts in League City?
Yes. The air handler houses the blower and evaporator coil, which sit upstream of the ducts. Cleaning the ducts while leaving the air handler dirty means the system recontaminates within weeks. Our full system clean includes the air handler, coil, blower, and all duct runs. The air handler photo record is delivered with the rest of the documentation for every job.
When to Clean Versus Replace After Water Intrusion in League City
This is the question every coastal homeowner eventually faces, and the answer is rarely given straight. Here’s how we see it after twelve years of work along the Gulf Coast.
If water entered the ducts or air handler during Harvey or any other storm event, the clock starts immediately. Mold spores germinate within 24-48 hours in the presence of moisture and organic material. The flex duct liner is an organic surface. So is the accumulated dust in the plenum. If the system was dried quickly and thoroughly, cleaning may be sufficient. We verify that with a camera inspection and moisture readings at every run.
If moisture sat for more than a few days, or if the air handler shows water staining at the seams, cleaning won’t fix it. The mold has colonized the liner material itself, and no amount of negative-pressure extraction removes it. Replacement is the honest answer. Our documentation shows the insurer what we saw, including the condition of every run, so the claim isn’t reduced to a cleaning line item.
In League City specifically, the calculus is harsher because the baseline humidity is so high. A duct that would dry out in Austin or Dallas within hours stays damp here for days. Homes along Clear Lake, in Kemah, and throughout the bay-facing subdivisions face this every time a storm pushes water inland. The 1970s-80s ranches with original fiberglass-lined trunks are the worst cases we see. The liner deteriorates, the debris circulates, and the homeowner lives with it for years because nobody opened the system and looked.
We pulled a camera through a Huntington Point ranch off Clear Lake where the original fiberglass-lined trunk was shedding into the supply registers. You could see gray flecks on the furniture every time the blower kicked on. The 38-year-old flex runs were sagging with condensation and the blower wheel was caked in microbial growth. After sourced removal with HEPA filtration and a new MERV 13 filter at the air handler, the homeowner said the difference was like turning off a dusty fan that had been running for years.
That’s the work. That’s what documentation looks like.
Get Your HVAC Cleaning Price Before Work Begins
Call (806) 606-6902 and we’ll schedule a camera inspection, give you a written price, and show you exactly what’s inside your ductwork before any cleaning starts. Every League City job includes the Documented Photo Record, the written price under Haven Standard Clause 1, and the 365-Day Done Right Promise in writing. If the work isn’t right, we make it right. That’s not a marketing line; it’s the warranty on your invoice. Call today for a free estimate.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning, serving League City since 2013.